Data Quality Reports for Session: 181036 User: aikenac Completed: 11/03/2016


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D160608.3ASI/TRACEGAS/M1 - Air leakasiaoscoM1.a1Incorrect
D160621.4ASI/AOS/M1 - Manifold blower not workingasiaoscoM1.a1Incorrect
D160707.2ASI/TRACEGAS/M1 - Slow return to ambient measurement after HNO3 calibrationasiaosnoxM1.a1Suspect


DQRID : D160608.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/03/2016154906/06/20161958Incorrect
Subject:
ASI/TRACEGAS/M1 - Air leak
DataStreams:asiaoscoM1.a1
Description:
Filter change resulted in total leak to cabin air. Data irrecoverable.
Measurements:asiaoscoM1.a1:
  • N2O mole fraction of during batch measurement(n2o)
  • Carbon monoxide (CO) mixing ratio corrected for water vapor concentration and
    calculated with nominal sensitivity correction(co_dry)
  • Nitrous oxide (N2O) mixing ratio corrected for water vapor concentration and
    calculated with nominal sensitivity correction(n2o_dry)
  • Calculated CO concentration(co)
  • Water vapor mixing ratio calculated with nominal sensitivity correction(h2o)


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DQRID : D160621.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/16/2016004206/16/20161345Incorrect
Subject:
ASI/AOS/M1 - Manifold blower not working
DataStreams:asiaoscoM1.a1
Description:
Manifold blower not working, instrument sample flows either zero or different than 
specified. Sampling through the stack not isokinetic.
Measurements:asiaoscoM1.a1:
  • N2O mole fraction of during batch measurement(n2o)
  • ambient_temperature
  • time_offset
  • East longitude(lon)
  • Nitrous oxide (N2O) mixing ratio corrected for water vapor concentration and
    calculated with nominal sensitivity correction(n2o_dry)
  • Calculated CO concentration(co)
  • Altitude above mean sea level(alt)
  • Water vapor mixing ratio calculated with nominal sensitivity correction(h2o)
  • gas_pressure
  • base_time
  • Carbon monoxide (CO) mixing ratio corrected for water vapor concentration and
    calculated with nominal sensitivity correction(co_dry)
  • mass_flow_through_MFC_1
  • mass_flow_through_MFC_2
  • gas_temperature
  • North latitude(lat)
  • set_point_for_MFC_2
  • set_point_for_MFC_1
  • valve_position_MFC_1
  • valve_position_MFC_2
  • time


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DQRID : D160707.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/01/2016000006/24/20160800Suspect
Subject:
ASI/TRACEGAS/M1 - Slow return to ambient measurement after HNO3 calibration
DataStreams:asiaosnoxM1.a1
Description:
Nitric acid permeation source is used to calibrate at 06:00 on odd days.  The response on 
the NO2 and NOy channels is large and takes excessive time to recover after the 
calibration.  This is apparent as a spike in the data after the calibration.  Users should ignore 
this spike.  HNO3 calibration was turned off.
Measurements:asiaosnoxM1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOx values(nox)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)


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